Question 1048028
<br>
Set up all three problems the same way, using the given ratios.<br>
(a) the ratio of mr paul's salary to mrs anna's salary is 3:4. if mrs anna draws a salary of Rs 28000, find mr. paul's salary.<br>
The ratio 3:4 is given in the statement of the problem.  Use it like this to set up the problem:
Let 3x = Mr Paul's salary
Let 4x = Mrs Anna's salary<br>
Mrs Anna's salary is Rs 28000:
4x = 28000
...<br>
(b) an amount of Rs210 is shared between roy and shireen so that ro gets 2/5 of shireen's share. how much does shireen get ?<br>
Here you have to do some interpretation of the given information to find that the ratio of the two amounts is 2:5.  Then...
Let 2x = Roy's amount
Let 5x = Shireen's amount<br>
The total is Rs 210:
2x+5x=210
...<br>
(c) in a school of 540 pupils, there are 5 girls to every 4 boys. how many boys are there in that school ?<br>
Only a little bit of work is needed to see that here the ratio is 5:4.  So...
Let 5x = number of girls
Let 4x = number of boys<br>
The total number of pupils is 540:
5x+4x = 540
...<br>
Finishing each of the problems is easy, using basic algebra.  For example, for the first problem....<br>
4x = 28000
x = 28000/4 = 7000
ANSWER: Mr Paul's salary is 3x = 3(Rs 7000) = Rs 21000<br>
You can finish the other two problems.<br>